Respect the size hint signal for the column and row delegates

The sizeHintChanged() signal from the column and row delegates need to be
connected to the doItemsLayout() slot so that the view is updated when the
size hint changes.

Additionally doDelayedItemsLayout() is called to ensure that this is
up-to-date as the size hints may have changed when the new delegate was
set on the row or column.

Change-Id: I458293f05ce9ef40a03bdbcab1a6e7a10f648c89
Reviewed-by: Thorbjørn Lund Martsum <tmartsum@gmail.com>
Reviewed-by: Kevin Puetz <PuetzKevinA@JohnDeere.com>
ANGLE: Fix handling of shader source with fixed length

This is a cherry-pick of upstream f60fab6d154f4c9bf599e92976cd8cee7f8633e0
(See https://chromium-review.googlesource.com/231612)

Task-number: QTBUG-42882
Change-Id: I7b4bdc4b68a1b93ff514f09ce35dbf4e9360af9b
Reviewed-by: Marko Kangas <marko.kangas@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
QHttpThreadDelegate : Fix QHttpThreadDelegate don't read response data about Synchronous error reply.

The App might use response data of Synchronous 401 reply. (example : specific error info of code, string as json)
so, Added a function to read it for Sync.
Async is already OK. Sync path is different from Async path.

Change-Id: I683d4b6b40f600793d2545811dcd6644515de79c
Task-number:QTBUG-43030
Reviewed-by: Jeongmin Kim <jm86.kim@lge.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@theqtcompany.com>
Reviewed-by: Richard J. Moore <rich@kde.org>